LT5100

Laser Transmissometer

The LT5100 is a precision laser transmissionmeter for measurement of transmittance and visibility, and it can directly output transmittance and visibility values. The function of modulation and sending or receiving of synchronization mechanism to eliminate stray light influence. Low temperature drift, constant current source, and 24-bit high-precision AD conversion could ensure the accurate measurement. It has high-bright OLED display and uses RS485 digital communication. It comes with alignment fine-tuning platform to support online calibration.

Technical specification
Visibility measuring range	5m~10km
Output content	transmittance, visibility value
Output format	ASCII plain text display, compatible with Vaisala protocol
Communication ports	RS485
Resolution	0.1m
Output rate	1.000/s
Average method	1min moving average
Modulation frequency	1KHz
Working environment	10~40℃ , 10%~95%RH
Storage environment	-20℃~70℃ , 10%~95%RH
Accuracy (RVR range)	Surplus the International Civil Aviation Organization (Annex 3) recommended specifications

Sending unit
Laser	Red light
Wavelength	635nm
Power	1mW
Stability	±0.1%（1min），±0.2%（1h）
Drive mode	Constant current

Receiving unit
Photoelectric detector photosensitive surface diameter	5.5mm
Window effective aperture	38mm
Sampling frequency	1k
Sampling bits	24bit